.
Explanation:
1)The cell membrane functions as a semi-permeable barrier, allowing a very few molecules across it while fencing the majority of organically produced chemicals inside the cell. Electron microscopic examinations of cell membranes have led to the development of the lipid bilayer model (also referred to as the fluid-mosaic model). The most common molecule in the model is the phospholipid, which has a polar (hydrophilic) head and two nonpolar (hydrophobic) tails.
2) simple diffusion across the cell plasma membrane. The structure of the lipid bilayer allows small, uncharged substances such as oxygen and carbon dioxide, and hydrophobic molecules such as lipids, to pass through the cell membrane, down the concentration gradient is , by simple diffusion.
3) some molecules, such as carbon dioxide and oxygen, can diffuse across the plasma membrane directly, but others need help to cross its hydrophobic or however, because they are charged the polar, they can't cross the phospholipid part of the membrane without help .
4) during fission a copy of the DNA is made and attached to the cell membrane as well. As this cell elongate in preparation for fission, the two DNA copies are pulled apart two opposite ends of the cell. New membrane material is deposited between the two ends of the cell, and a new wall grows between them .
5) UMASS STEM-ED From Bubbles to Cell Membranes Workshop. Bubble ... dynamic nature which can't be properly appreciated in a static textbook. ... the small thread through one of the straws.
6) example of passive transport and active transport across a cell membrane so, cell membranes are semipermeable meaning they have control over what molecules can or cannot pass through. Some molecules can just drift Inn.
<span>External circumferential lamellae</span>
The answer is a Nonpolar covalent bond. Hope this Helps:)))
Think of respiration as ‘cellular respiration,’ which is the process by which the body extracts energy from glucose molecules. Breathing is the mechanism of the lungs that brings oxygen into the body and expels carbon dioxide
Respiration is a vital way for the cells of plants and animals to obtain and utilize energy. Without this energy, cells in the bodies of plants and animals would fail to function and will eventually break down and die. The breaking down of sugar into energy and storing it in ATP is the key to the survival of living organisms.
The formation of ATP involves two different processes, cellular respiration and fermentation. The reactions to these processes are controlled by enzymes and involve the loss and gain of electrons.
Cellular respiration takes place in the cells of organisms using metabolic reactions and processes to convert biochemical energy from the nutrients they absorbed into ATP or adenosine triphosphate and to release waste products.
The energy derived from nutrients like sugar, amino and fatty acids, an electron acceptor which can be oxygen (used by aerobic organisms) or other inorganic donors like sulfur, metal ions, methane, or hydrogen (used by anaerobic organisms) are stored in ATP and used for biosynthesis, locomotion and to transport molecules in cell membranes.
Cellular respiration can be aerobic or anaerobic. Aerobic respiration requires oxygen to generate ATP and plants and animals use this in utilizing the energy they received.
Answer:
A. increase in American pika population size
Explanation:
Carrying capacity is the idea that relates to how much population can an environment sustain before collapsing. Here, the answer would be A. increase in American pika population size because if you increase the food for weasals, naturally the population carrying capacity goes up because now the environment has food to feed the weasals which can contribute to increasing the carrying capacity (i.e. the environment can now handle larger population of weasel than initial condition)
